ISSPRO R4131-24VDC - Manual

ISSPRO, INC. 2515 N.E. Riverside Way, Portland OR 97211
Telephone: (503) 288-4488  Toll Free: (800) 888-8065
FAX: (503) 249-2999
Form No. 438B - (4/23/01 Rev. C) Page 1 of 2
ISSPRO Turbo Temperature Monitor
R4130, R4130-24VDC: Diesel Version
R4131, R4131-24VDC: Gas Version
Description:
The ISSPRO Turbo Temperature Monitor (TTM) is an engine run/stop controller, which keeps the engine
operating until a safe exhaust temperature for the turbocharger bearings has been reached. Temperature is
sensed by using a “K” type thermocouple installed in the exhaust pipe AFTER the turbocharger.
Operation:
In the event of the exhaust temperature being above the safe limit when the ignition switch is turned off,
the TTM will maintain a high voltage level at the ignition switch, effectually disallowing the engine to
shut off until a safe temperature has been reached. NOTE: Once the TTM has shut off, there will be no
power drain on the electrical system.
Optional Indicator Lamp:
The optional indicator lamp will turn on whenever the exhaust temperature is above the safe shut off
limit. NOTE: The TTM switches the lamp to ground when turned on.
Optional Disable Switch:
The optional disable switch adds the feature of being able to disable the TTM from controlling the engine
shutdown. NOTE: The switch is normally closed.
Max. Operating Temperature:
-40
°C to +85°C
Set Point:
Diesel: 300
°F (±5% @ 70°F)
Gas: 600
°F (±5% @ 70°F)
Operating Voltage:
R4130 / R4131: 10-16 VDC, Negative ground only
R4130-24VDC / R4131-24VDC: 16-30 VDC, Negative ground only
Protection:
Reverse voltage connection: Indefinitely
Positive transients: +250 V
Negative transients: -400 V
Max. Current Rating: Indicator Lamp: 0.200 Amps
“IGN SW” Terminal: 15 Amps
Installation:
The TTM should be mounted inside the vehicle cab, as it is not sealed against harsh environments or
water. Connect wires according to the diagram (see side 2).
NOTE:
The wires for the connections to “IGN SW” and “BATT+” must be equal to or greater
than the size of the wire connector to the “BATT” terminal of your ignition’s switch (#16
AWG minimum)
NOTE:
If the Disable Switch is installed, then use the following chart to select the minimum
current rating for your switch:
Wire Size at Battery
Terminal of Ignition
Switch
Minimum Ampacity
16 AWG 8 Amps
14 AWG 15 Amps